For applications where the bearings are subjected to unique operating conditions, SKF manufactures customized single row tapered roller bearings on request. To meet the needs of these particular applications, SKF manufactures, for example, pinion or low friction bearings with the following features:

Pinion bearings

are designed for pinion shafts in the differentials of automotive transmissions to provide a constant, accurate gear mesh

have very narrow geometrical tolerances and high preload capability

have special friction characteristics and can be axially adjusted within narrow limits using the friction-torque method

have an internal design that supports the formation of a hydrodynamic lubricant film to substantially reduce friction, and consequently the operating temperature, during the running-in period

retain their preload setting when mounted, lubricated and maintained properly

are identified by the designation suffix CL7C

Low friction bearings

are designed to meet the ever-increasing demands to reduce friction and energy use

optimize a reduction in friction through their internal geometry, number of rollers, surface finish and redesign of their cage

have a frictional moment that is at least 30% lower when compared with a same-sized SKF standard bearing

normally do not need a running-in procedure because their optimized contact profiles provide optimum load distribution and they experience only a small, controlled loss of initial preload

SKF also manufactures certain sizes of single row tapered roller bearings with a flange on the outer ring (fig. 2). These bearings are easy to locate axially in the housing. The housing bore can be manufactured more easily and more cost-effectively because housing shoulders are not required.

SKF single row tapered roller bearings are fitted with one of the cages shown in table 1. The standard stamped steel cage is not identified in the bearing designation. If non-standard cages are required, check availability prior to ordering.

When used at high temperatures, some lubricants can have a detrimental effect on polyamide cages. For information about the suitability of cages, refer to Cages and Cage materials.